There are many theories about the formation of the world. But the theory is accepted, most believe the world coincides with the solar system, when around 4 560 million years ago,
.The solar system. Caused by clouds of gas and dust, called Nebula (Nebula) within the nebula. The substances จับกลุ่มกัน middle from gravity, was born. Protostar or the first star, the heat from the process.On the spin like a record. Many substances to concentrated in the middle of the flat sheet. Later exploded violently. The sun was born on the heart. Along with the nuclear fusion (nuclear fusion).The gas and dust particles of various coil around the sun, and a planet. The surrounding the outside of the solar system. Consist of groups of rock and ice cube.(comets), provided that the comet will orbit the sun in different degree. During the orbit between Mars and Jupiter. There are bands of the rock group called the asteroids (asteroids) orbit.Plunge into the atmosphere. The world is like a fire fell from the sky. As called the meteor or shooting star The rest of the burning. The atmosphere that fell to earth is called a meteor or wormwood (meteorites)
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when the world happened, that the world is smaller than the present. But with a piece of planets and comets were a fall to the earth during the 2-3 million years first, do to the world is the size of the current
.After about 100 million years, the world is divided into layers. Due to gravity, the part most hard steel - nickel () is the central axis. (core) and the lighter, such as iron, magnesium silicate, aluminum.(mantle) and crust (crust the lightest gas, including the various enveloped the world
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when the world gradually cools steam began to catch a cloud and rain down to earth, a sea, river and ocean world, when 4
000 million years ago, a carbon dioxide gas is dominant. There is oxygen, just a little. The first life chemical composition range, but the key element is water, carbon, hydrogen, oxygen and nitrogen
.The oldest small fossils were discovered, aged about 3
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